I have been working on the graphics engine again.
The improvements are:
- The spectrum is drawn with a best fit curve, instead of connecting the sampled points with straight lines. This gives a much nicer representation of the spectrum, especially when less samples are used.
- I managed to improve the refresh rate slightly. The bottleneck is now the hardware of the SMA Spectrum Analyzer - I don't think I can squeeze more speed out of it.
- The spectrum can be rendered with shading ("solid curve"). This makes the simultaneous view of LIVE, MIN, MAX and AVG much nicer.
- I *finally* implemented a proper colour map for the waterfall diagram.
The spectrum shows three traces: LIVE, MIN and MAX.
As always, go ahead and download the lates release here: